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3 years ago

12

If an investment of $8,000 in 1965 had a value of $49,000 in 1990, how many years did it take for the investment to double? (Rou

nd to the nearest tenth of a year)

2 answers:

Alenkasestr [34]3 years ago

8 0

Answer:

it took 5 years

Step-by-step explanation:

1965,1970,1975,1980,1985,1990

Snowcat [4.5K]3 years ago

4 0

I think it’s 5 years it take

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In a right triangle one leg measures a quarter of the other, how much do its acute angles measure? with procedure please

KATRIN_1 [288]

Answer:

The answer to your question is 14° and 76°

Step-by-step explanation:

Data

leg 1 = x

leg 2 = x/4

angle 1 = ?

angle 2 = ?

Process

To solve problem use trigonometric functions. We must use the trigonometric function that relates both legs (tangent).

tangent Ф = Opposite side / Adjacent side

-Substitution

tan Ф = (x/4) / x

-Simplification

tan Ф = x / 4x

tan Ф = 1/4

- Find Ф

Ф = tan⁻¹(1/4) = 14°

- Find the other acute angle

The sum of the internal angles in a triangles equals 180°

Ф + Ф₁ + 90° = 180

-Solve for Ф₁

Ф₁ = 180 - 90 - 14

-Result

Ф₁ = 76°

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3 years ago

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larisa [96]

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<h3>Step-by-step explanation:</h3>

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We must first find the slope.

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We can see that the line intersected the $y$ -axis at $(0,1)$ so $b = 1$ .

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3 years ago

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saveliy_v [14]

Answer:

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